I don't remember exactly when it comes to TaskEpilog, but the Epilog does not put its output into the job's --output or --error file(s). Hopefully, SchedMD will add an easy way for prologs/epilogs to write to the job's file someday.
In the mean time, we use a dirty hack for it. Basically, our Epilog script uses information from "scontrol show job" to get the name of the --output file, and redirects output directly to it. (If the file doesn't yet exist, the epilog must create it, with correct ownerships and permissions, and depending on your setup (e.g., rootsquash), you have to su to the job user first. I told you it was a dirty hack. :) -- Regards, Bjørn-Helge Mevik, dr. scient, Department for Research Computing, University of Oslo
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